摘要
采用电刺激或毁损家兔下丘脑食欲中枢不同部位（ＬＨＡ和ＶＭＨ）的方法，观察胃电和胃肠运动变化。刺激ＬＨＡ或ＷＨ均能诱发胃电和胃机械运动的增强，但刺激ＶＭＨ作用更为明显，与刺激ＬＨＡ比较，表现为所需刺激强度小，潜伏期短，诱发后增强持续时间长，胃肠运动幅度增大，频率加快。毁损ＶＭＨ后刺激ＬＨＡ，胃电和胃肠运动仅有轻度增强，胃肠张力明显下降。提示，ＶＭＨ的完整性对维持正常胃肠活动具有重要意义，且具有相对独立性。
By electrods and strain gauge recording effects of stimulation and damage of appetite centers (LHA and VMH) on gastrointestinal activity were studied enhancement of gastrointestinal activity can all be induced by stimulation of LHA or VMH, but latant period of VMH response shorter than LHA, persistant period longer than LHA, stimulation intensity is lower than LHA stimulating VMH, amplitute and frequency of motility are increased;stimulating LHA after VMH damaged, electrisity and motility are enhanced slightly and tension is reduced obviously. This study suggests that VMH is relatively independence to gastrointestinal activities.Intact VMH is importance for maintenance normal gastrointestinal activity.
关键词
食欲中枢
胃电
胃肠运动
appetide center
gastric electricity
gastrointestinal motility
